Coil support



March 26, 1940.. R HQWEg. 2,194,502

COIL SUPPORT Filed June 6, 1939 (247/ E #02062 9y Rm Patented Mar. 26,1940 UNITED STATES COIL SUPPORT Carl R. Hower, Chicago, 111., assignorto Ameri can'Lava Corporation, Chattanooga, Tenn., a corporation ofTennessee Application June 6, 1939, Serial No. 277,662

a 1 Claim.

This invention relates to a coil support and particularly to a supportfor one or more small coils such as may be used ina radio receiver. Theinvention has particular application to radio frequency transformers inthe antenna circuit or for radio frequency chokes or any other part ofany electrical apparatus where a small delicate coil or coils are to besupported.

Referring to the drawing:

19 Figure 1 shows the invention partly in section;

Fig. 2 is a section on line 2-2 of Fig. 1;

Fig. 3 is a section on line 3-3 of Fig. 2;

Fig. 4 is a detail of the angle-shaped supporting member;

13 Fig. 5 is an end view of the insulating thimble showing the slottedend while Fig. 6 is an end view showing the other end of the thimble;

Fig. 7 is a detail of the insulating compressible disk; and

20 Fig. 8 is a detail of a connecting lug.

Referring to the drawing the device comprises supporting member I ofmetal having a base portion 2 provided with a mounting aperture 3 and anupstanding portion 4 having an aperture 5 8 near the end thereof andprotuberance 6 near aperture 5. Adjacent the free end of mountingportion 4 is a. circular disk 8 of insulating material preferably thoughnot necessarily having substantial compressibility. Thus any of thelami- Q .nated insulating'materials having layers of fabric impregnatedwith some phenol condensation product and sold under various trade namesmay be used. Ceramic disks may also be used. Disk 3 is provided with anaperture 9 at the center thereof which is adapted to register withaperture 5 of the mounting member. There is also provided on disk 3 aslot III extending inwardly from the edge of the disk toward aperature9.

Disk 3 is adapted to be disposed against one end I2 of a thimble-I3preferably of ceramic although any other insulating material may beused. This thimble may be of any suitable length and is provided with abore I4 extending throughout most of the length of the thimble. One endof bore I4 terminates in a shoulder I5 and then the bore is continued asIt having a diameter substantially less than that of bore Il.

One end face I2 of thimble I3 is provided with a plurality of slots I3 0the edge of the thimble toward the center bore. These slots I3, hereshown as four in number, although more or less may be provided, arepreferably rectangular and terminate at their inner ends in recesses I3which extend into the interior of the thimble. A locating protuberance20 is also provided on end face I2 between two of the slots I3.

Disposed in each slot I3 is a contact lug 22 having a narrowed orreduced mounting portion 23 with an end locking portion 24 bent at rightextending inwardly from v angles thereto. The lug proper may be providedwith an aperture 25 and have its edge out in somewhat at 26 in order toprovide for the ready soldering of one or more wires.

As is evident from the drawing, a lug is disposed in slot .I8 so that alocking portion 24 extends into a recess I8. The various parts are soproportioned that the lug material is somewhat thicker than the depth ofslot I8. and is pressed tightly on opposite sides. In order to maintainthe assembly intact the mounting portion or arm I together with the disk8 and thimble I3 are so I disposed that the various apertures 5, 9 andI6 all register. Thereafter an eyelet 21 is passed through theregistering apertures and curled over in place to maintain the assemblyintact. The various parts are so adjusted that the protuberances 6 andare disposed in slot ID of insulating disk 8 and this disk is preferablyof suflicient thickness so that the two protuberances 20 are separated.

Thereafter coils 30 and 3| may be disposed on thimble I3 and have theirterminals connected to the lugs in any suitable fashion. As shown inFig. 3, for example, the coils are disposed in transformer relationshipand may be readily picked up or handled without damage.

It is understood of course that the connecting lugs may be changed innumber and shape as the occasion demands. The entire assembly is rigid,and turning of the thimble on the eyelet is prevented so that there isno possibility of breaking the connecting wires to outside apparatus.Relative motion between the lugs and the coils is prevented so long asthe coils are not moved on the thimble so that the coil terminals willnot be damaged. The lugs themselves are retained firmly enough so thatthe entire unit may be handled either by means of the base member I orany of the lugs.

What is claimed is:

A coil support comprising a cylindrical thimble having an end faceprovided with slots extending inwardly from the edge of the face towardthe center thereof, said thimble having a protruding portion at the endface thereof, a connecting lug adapted to fit into each slot and beflush with the end face of said thimble, an insulating disk adapted tobe disposed against said end face of said thimble, said insulating diskhaving a slot adapted to register with said protuberance, a mountingmember having a protuberance and adapted to be disposed against saidinsulating disk with said protuberance fitting into said disk slot, andmeans for maintaining said insulating disk, mounting member and thimblein rigid relation to lock said lugs together and prevent relativerotation between said disk, mounting member and said thimble.

CARL HOWER. Q0

